1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>boost::geometry::index::indexable</title> 5<link rel="stylesheet" href="../../../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../../index.html" title="Chapter 1. Geometry"> 8<link rel="up" href="../observers.html" title="Observers (boost::geometry::index::)"> 9<link rel="prev" href="../observers.html" title="Observers (boost::geometry::index::)"> 10<link rel="next" href="boost__geometry__index__equal_to.html" title="boost::geometry::index::equal_to"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="../observers.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../observers.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="boost__geometry__index__equal_to.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h5 class="title"> 27<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable"></a><a name="structboost_1_1geometry_1_1index_1_1indexable"></a><a class="link" href="boost__geometry__index__indexable.html" title="boost::geometry::index::indexable">boost::geometry::index::indexable</a> 28</h5></div></div></div> 29<div class="toc"><dl class="toc"> 30<dt><span class="section"><a href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___">operator()(Value 31 const &)</a></span></dt> 32<dt><span class="section"><a href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___">operator()(V 33 const &)</a></span></dt> 34</dl></div> 35<p> 36 <a class="indexterm" name="idm45635673110784"></a><a class="indexterm" name="idm45635673110096"></a><a class="indexterm" name="idm45635673109408"></a><a class="indexterm" name="idm45635673108720"></a> 37The function object extracting Indexable from Value. 38 </p> 39<h6> 40<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.h0"></a> 41 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.description"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.description">Description</a> 42 </h6> 43<p> 44 It translates Value object to Indexable object. By default, it can handle 45 Values which are Indexables, std::pair<Indexable, T2>, boost::tuple<Indexable, 46 ...> and std::tuple<Indexable, ...> if STD tuples and variadic 47 templates are supported. 48 </p> 49<h6> 50<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.h1"></a> 51 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.header"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.header">Header</a> 52 </h6> 53<p> 54 <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">/</span><span class="identifier">index</span><span class="special">/</span><span class="identifier">indexable</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> 55 </p> 56<h6> 57<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.h2"></a> 58 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.synopsis"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.synopsis">Synopsis</a> 59 </h6> 60<pre class="programlisting"><code class="computeroutput"><span class="keyword">template</span><span class="special"><</span></code><code class="computeroutput"><span class="keyword">typename</span> <span class="identifier">Value</span></code><code class="computeroutput"><span class="special">></span></code> 61<code class="computeroutput"><span class="keyword">struct</span> <span class="identifier">indexable</span></code> 62<code class="computeroutput"><span class="special">{</span></code> 63<code class="computeroutput"> <span class="comment">// ...</span></code> 64<code class="computeroutput"><span class="special">};</span></code> 65</pre> 66<h6> 67<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.h3"></a> 68 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.template_parameter_s_"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.template_parameter_s_">Template 69 parameter(s)</a> 70 </h6> 71<div class="informaltable"><table class="table"> 72<colgroup> 73<col> 74<col> 75</colgroup> 76<thead><tr> 77<th> 78 <p> 79 Parameter 80 </p> 81 </th> 82<th> 83 <p> 84 Description 85 </p> 86 </th> 87</tr></thead> 88<tbody><tr> 89<td> 90 <p> 91 <code class="computeroutput"><span class="identifier">Value</span></code> 92 </p> 93 </td> 94<td> 95 <p> 96 The Value type which may be translated directly to the Indexable. 97 </p> 98 </td> 99</tr></tbody> 100</table></div> 101<h6> 102<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.h4"></a> 103 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.typedef_s_"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.typedef_s_">Typedef(s)</a> 104 </h6> 105<div class="informaltable"><table class="table"> 106<colgroup> 107<col> 108<col> 109</colgroup> 110<thead><tr> 111<th> 112 <p> 113 Type 114 </p> 115 </th> 116<th> 117 <p> 118 Description 119 </p> 120 </th> 121</tr></thead> 122<tbody><tr> 123<td> 124 <p> 125 <a name="structboost_1_1geometry_1_1index_1_1indexable_1af6f21324f6484330b9deb0ee0629f4b4"></a><code class="computeroutput"><span class="identifier">result_type</span></code> 126 </p> 127 </td> 128<td> 129 <p> 130 The type of result returned by function object. It should be 131 const Indexable reference. 132 </p> 133 </td> 134</tr></tbody> 135</table></div> 136<h6> 137<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.h5"></a> 138 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.member_s_"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.member_s_">Member(s)</a> 139 </h6> 140<div class="informaltable"><table class="table"> 141<colgroup> 142<col> 143<col> 144<col> 145</colgroup> 146<thead><tr> 147<th> 148 <p> 149 Modifier 150 </p> 151 </th> 152<th> 153 <p> 154 Function 155 </p> 156 </th> 157<th> 158 <p> 159 Description 160 </p> 161 </th> 162</tr></thead> 163<tbody> 164<tr> 165<td> 166 <p> 167 <code class="computeroutput"><span class="keyword">const</span></code> 168 </p> 169 </td> 170<td> 171 <p> 172 <a class="link" href="boost__geometry__index__indexable.html#structboost_1_1geometry_1_1index_1_1indexable_1a0bbe640be9ae0475e1b56f5b2e08877e"><code class="computeroutput"><span class="keyword">operator</span><span class="special">()(</span><span class="identifier">Value</span> <span class="keyword">const</span> 173 <span class="special">&)</span></code></a> 174 </p> 175 </td> 176<td> 177 <p> 178 Return indexable extracted from the value. 179 </p> 180 </td> 181</tr> 182<tr> 183<td> 184 <p> 185 <code class="computeroutput"><span class="keyword">const</span></code> 186 </p> 187 </td> 188<td> 189 <p> 190 <a class="link" href="boost__geometry__index__indexable.html#structboost_1_1geometry_1_1index_1_1indexable_1a4aa66ffe2975f655bada9e6b5a65317b"><code class="computeroutput"><span class="keyword">operator</span><span class="special">()(</span><span class="identifier">V</span> <span class="keyword">const</span> 191 <span class="special">&)</span></code></a> 192 </p> 193 </td> 194<td> 195 <p> 196 Return indexable extracted from the value. Overload for types 197 compatible with Value but different yet holding referencable 198 Indexable, e.g. tuple containing a reference. 199 </p> 200 </td> 201</tr> 202</tbody> 203</table></div> 204<div class="section"> 205<div class="titlepage"><div><div><h6 class="title"> 206<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___"></a><a name="structboost_1_1geometry_1_1index_1_1indexable_1a0bbe640be9ae0475e1b56f5b2e08877e"></a><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___" title="operator()(Value const &)">operator()(Value 207 const &)</a> 208</h6></div></div></div> 209<p> 210 <a class="indexterm" name="idm45635673030112"></a> 211Return indexable extracted from the value. 212 </p> 213<h7><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___.h0"></a> 214 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___.synopsis"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___.synopsis">Synopsis</a> 215 </h7><pre class="programlisting"><code class="literal"><a class="link" href="boost__geometry__index__indexable.html#structboost_1_1geometry_1_1index_1_1indexable_1af6f21324f6484330b9deb0ee0629f4b4">result_type</a></code> <code class="computeroutput"><span class="keyword">operator</span><span class="special">()</span></code><code class="computeroutput"><span class="special">(</span></code><code class="computeroutput"><span class="identifier">Value</span> <span class="keyword">const</span> <span class="special">&</span></code> <code class="computeroutput"><span class="identifier">v</span></code><code class="computeroutput"><span class="special">)</span></code> 216</pre> 217<h7><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___.h1"></a> 218 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___.modifier_s_"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___.modifier_s_">Modifier(s)</a> 219 </h7><p> 220</p> 221<pre class="programlisting"><span class="keyword">const</span></pre> 222<p> 223 </p> 224<h7><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___.h2"></a> 225 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___.parameter_s_"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___.parameter_s_">Parameter(s)</a> 226 </h7><div class="informaltable"><table class="table"> 227<colgroup> 228<col> 229<col> 230<col> 231</colgroup> 232<thead><tr> 233<th> 234 <p> 235 Type 236 </p> 237 </th> 238<th> 239 <p> 240 Name 241 </p> 242 </th> 243<th> 244 <p> 245 Description 246 </p> 247 </th> 248</tr></thead> 249<tbody><tr> 250<td> 251 <p> 252 <code class="computeroutput"><span class="identifier">Value</span> <span class="keyword">const</span> 253 <span class="special">&</span></code> 254 </p> 255 </td> 256<td> 257 <p> 258 <code class="computeroutput"><span class="identifier">v</span></code> 259 </p> 260 </td> 261<td> 262 <p> 263 The value. 264 </p> 265 </td> 266</tr></tbody> 267</table></div> 268<h7><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___.h3"></a> 269 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___.returns"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___value_const___.returns">Returns</a> 270 </h7><p> 271 The indexable. 272 </p> 273</div> 274<div class="section"> 275<div class="titlepage"><div><div><h6 class="title"> 276<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___"></a><a name="structboost_1_1geometry_1_1index_1_1indexable_1a4aa66ffe2975f655bada9e6b5a65317b"></a><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___" title="operator()(V const &)">operator()(V 277 const &)</a> 278</h6></div></div></div> 279<p> 280 <a class="indexterm" name="idm45635672990752"></a> 281Return indexable extracted from the value. Overload for types compatible 282 with Value but different yet holding referencable Indexable, e.g. tuple 283 containing a reference. 284 </p> 285<h7><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___.h0"></a> 286 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___.synopsis"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___.synopsis">Synopsis</a> 287 </h7><pre class="programlisting"><code class="computeroutput"><span class="keyword">template</span><span class="special"><</span></code><code class="computeroutput"><span class="keyword">typename</span> <span class="identifier">V</span></code><code class="computeroutput"><span class="special">></span></code> 288<code class="literal"><a class="link" href="boost__geometry__index__indexable.html#structboost_1_1geometry_1_1index_1_1indexable_1af6f21324f6484330b9deb0ee0629f4b4">result_type</a></code> <code class="computeroutput"><span class="keyword">operator</span><span class="special">()</span></code><code class="computeroutput"><span class="special">(</span></code><code class="computeroutput"><span class="identifier">V</span> <span class="keyword">const</span> <span class="special">&</span></code> <code class="computeroutput"><span class="identifier">v</span></code><code class="computeroutput"><span class="special">)</span></code> 289</pre> 290<h7><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___.h1"></a> 291 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___.modifier_s_"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___.modifier_s_">Modifier(s)</a> 292 </h7><p> 293</p> 294<pre class="programlisting"><span class="keyword">const</span></pre> 295<p> 296 </p> 297<h7><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___.h2"></a> 298 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___.parameter_s_"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___.parameter_s_">Parameter(s)</a> 299 </h7><div class="informaltable"><table class="table"> 300<colgroup> 301<col> 302<col> 303<col> 304</colgroup> 305<thead><tr> 306<th> 307 <p> 308 Type 309 </p> 310 </th> 311<th> 312 <p> 313 Name 314 </p> 315 </th> 316<th> 317 <p> 318 Description 319 </p> 320 </th> 321</tr></thead> 322<tbody><tr> 323<td> 324 <p> 325 <code class="computeroutput"><span class="identifier">V</span> <span class="keyword">const</span> 326 <span class="special">&</span></code> 327 </p> 328 </td> 329<td> 330 <p> 331 <code class="computeroutput"><span class="identifier">v</span></code> 332 </p> 333 </td> 334<td> 335 <p> 336 The value. 337 </p> 338 </td> 339</tr></tbody> 340</table></div> 341<h7><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___.h3"></a> 342 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___.returns"></a></span><a class="link" href="boost__geometry__index__indexable.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__indexable.operator___v_const___.returns">Returns</a> 343 </h7><p> 344 The indexable. 345 </p> 346</div> 347</div> 348<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 349<td align="left"></td> 350<td align="right"><div class="copyright-footer">Copyright © 2009-2019 Barend Gehrels, Bruno Lalande, Mateusz Loskot, Adam 351 Wulkiewicz, Oracle and/or its affiliates<p> 352 Distributed under the Boost Software License, Version 1.0. (See accompanying 353 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 354 </p> 355</div></td> 356</tr></table> 357<hr> 358<div class="spirit-nav"> 359<a accesskey="p" href="../observers.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../observers.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="boost__geometry__index__equal_to.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 360</div> 361</body> 362</html> 363
